Honeywell CM900 INSTALLATION

DRAWING DETAILS

PART NUMBER

42010942-003

CM900 INSTALLATION GUIDE (UK - English)

ISS

R1

ECRO AND DATE

DR001129 10/05

DRAWN

MKTINGARTWORK DESCRIPTION

MF BM

SIZE AND FOLDING

A3 A4 A5 A6 A7 OTHER

SIZE WHEN PRINTED X

SIZE WHEN FOLDED X

MATERIAL

BOND X

SILK

WEIGHT 70g 80g 100g 115g 150g OTHER

X

DATE

10/05

PRINTING

ONE COLOUR TWO COLOUR THREE COLOUR FULL COLOUR

SINGLE SIDE

DOUBLE SIDE X

X BLACK

SEE FOLLOWING PAGES FOR COLOUR DESIGNATION. ALL PRINTING MUST BE
CLEAR, FREE OF SMUDGES AND MULTI COLOUR PRINT PROPERLY REGISTERED

SPECIAL INSTRUCTIONS

Folding Sequence Finished Size

2nd

1st Fold

2nd

Part Number

3rd

105mm

148mm

Part Number

Front

DO NOT INCLUDE THIS PAGE IN THE PRINTING

Installer Parameters Table:

Parameter Parameter No.

Category 1 Parameters - Programmable Thermostat Settings

AM-PM / 24hr Display

Reset Time/ Temp Program

Auto Summer/Winter Time
Change

LCD Backlighting

Upper Temp Limit

Lower Temp Limit

Optimisation

Telephone Override

Second Sensor

Temperature Offset

Proportional Band Width

Reset Parameters to Factory
Defaults

Category 2 Parameters - System Settings (press PROGRAM

Minimum boiler ON time

Cycle Rate

Electric Heat

Heat/Cool Change

Pump Exercise

1:CL

2:rP

3:tC

5:bL

6:uL

7:LL

8:OP

9:tS

10:SS

12:tO

13:Pb

19:FS

1:Ot

2:Cr

3:EH

4:HC

5:PE

Factory Default Setting

Display

12

1

1

1

35

5

0

0

0

0.0

1.5

1

Display

1

6

0

0

0

Description

12 hr – AM/PM clock display format

Time / Temperature prole set to factory
default.

Changes to 0 when one of the time/temp
proles are changed.

Auto Summer/Winter Time Change
Enabled

Backlighting Enabled

35°C Upper Temp. Limit

5°C Lower Temp. Limit

Optimisation Disabled

Telephone Override Disabled

Second Sensor Disabled

No temperature offset

Proportional band of 1.5 degree

All settings at factory defaults

Changes to 0 when one of the parameter
is changed

to access this category)

Description

1 minute minimum ON time

6 cycles per hour (cph)

Resistive Loads <3 A

Disabled

Pump exercise disabled

Optional Setting

Display

21 to 34

5 to 21

1 or 2

-3 to +3

1.6 to 3.0

Display

2 to 5

3, 9 or 12

Description

24

24 hr clock display format

0

Factory Time / Temperature prole has
been modied

To restore the factory prole set to 1

0

Auto Summer/Winter Time Change
Disabled

0

Backlighting Disabled

21°C to 34°C adjustment in 1°C steps

5°C to 21°C adjustment in 1°C steps

1

Optimisation Enabled

1

Telephone Override Enabled

Second Sensor Enabled:
1 = Outside Sensor
2 = Remote Room Sensor

-3°C to +3°C adjustment in 0.1°C steps

1.6°C to 3.0°C adjustment in 0.1°C steps

0

Settings are as modied above

To restore the factory parameters set to 1

Description

Selection of 2, 3, 4 or 5 minutes minimum
ON time

Selection of 3, 9 or 12 cph

1

Resistive loads 3 to 8 A

1

Enabled

1

Pump exercise enabled

CM900 Installation Guide

Programmable Room Thermostat

The Honeywell CM900 (CM907 or CM901) is a modern programmable room
thermostat based on Honeywell’s proven programming philosophy. To further
improve the ease of use, this product includes a very large LCD display with
backlighting and a Dynamic Text Display to assist customers during daily use.

Installing the Thermostat

1 2 3

Typical wiring connections

4 5

24-230V

50-60Hz

24-230V

50-60Hz

Remove from packaging Mount the backplate to wallFind a suitable location for mounting

24-230V

50-60Hz

= M3.5

o

6

= N

Connect the wiring correctly

1.0-2.5mm²

6mm max.

42010942-003 R1

Notes:

Remember to always press the green

button to conrm that you want to store your new Installer Set-Up setting. To exit the Installer Mode move

the slider switch to the AUTO or MAN positions.

System Commissioning

To enter the diagnostic mode move the slider switch to the OFF position then press and hold the

settings mode. Next press and hold the

be viewed on the display by pressing the

Honeywell Control Systems Ltd.

Arlington Business Park,

Bracknell

Berkshire

RG12 1EB

Technical Help Desk: 08457 678999

www.honeywelluk.com

and

buttons together. The unit will hold the relay on for 5 minutes and the following information can

or

buttons. : model ID, date code (WW/YY) and checksum.

42010942-003 R1
© 2005 Honeywell International Inc.

button for 5 sec. The unit will enter the user

Combi

Boiler

Basic
Boiler

d. e.

230V

50-60Hz

Zone
Valve

230V

50-60Hz

Thermal

Actuator

Install the batteries (included) Attach the instruction label to ap

7 8

24-230V

50-60Hz

230V

50-60Hz

Zone

Valve

Cooling
System

24-230V

50-60Hz

Pump

Only

Electric

Actuator

Attach the cover to backplate

6

1

2

3

4 1

“Manufactured for and on behalf of the Environment and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorised Representative Honeywell International Inc.”

Removing the Cover

Using the Special Features of the Thermostat

Special Feature: Description: To Enable/Disable This Feature:

Optimisation (Variable
Start Time)

The thermostat will adjust the start time in the morning/afternoon so the
desired temperature is reached by the start of the program period. The
system will restrict the start time to a max of 2 hours.

To enable: Set parameter 8:OP
(category 1) to 1.

2

3

1

Setting-up the Thermostat

Please follow the illustrations detailed on page 1 in sequence to install the thermostat correctly, then refer to the steps below:

NOTE: For gas boiler applications, the factory system settings will not need to be changed (for other applications see section ‘Using the
Thermostat for Specic Applications’ below).

To set-up the thermostat:

1. Remove the battery cover and insert the batteries supplied with the unit (2 x AA LR6 Alkaline Batteries).

2. Move the slider switch to the DATE position.

3. Use the

4. Use the

5. Move the slider switch to the required operating mode (AUTO, MAN or OFF) to begin operating at the default factory settings, or move to
PROG and modify the built-in heating program accordingly (see User Guide).

or

buttons to set the correct day / month / year, pressing the green

or

buttons to set the correct time, pressing the green

button to conrm.

button to conrm.

You can now use the ‘User Guide’ supplied with the thermostat to demonstrate how it works to the home owner.

Using the Thermostat for Specic Applications

The CM900 thermostat is a versatile controller that can be used to control many different applications. For most typical applications, like ‘wall-hung
gas red combination boiler control’ or ‘zone valve control’, no adjustments from the factory settings are required.
For other applications, like controlling an oil burner, the best system performance can be achieved by modifying selected parameters of the
thermostat in installer’s mode. The table below lists the most common settings used for a specic application:

Heating or Cooling
Operation

Summer/Winter Auto
time change

Temperature Offset

Upper/Lower
Temperature Limit

This product can be used for heating or cooling applications. If you select
cooling mode the control algorithm and factory default program will be
modied. You can independently modify the heating and cooling prole.

This feature moves time automatically on the last Sunday of March and the
last Sunday of October. The feature is factory enabled.

If the thermostat is located in a particularly hot/cold location and cannot
be moved because of wiring restrictions then the measured/displayed
temperature can be adjusted by +/- 3°C. This is useful if the homeowner
wants the reading to match another appliance temperature display.

The normal upper temperature limit of 35°C can be reduced to 21°C to save
the homeowner energy. The normal lower limit of 5°C can be increased up
to 21°C to protect inhabitants from cold.

To enable: Set parameter 4:HC
(category 2) to 1.

To enable: Set parameter 3:tC
(category 1) to 1.

Set parameter 12:tO (category 1) to
the required offset value.

Set parameter 6:uL (category 1) to the
desired upper limit.

Set parameter 7:LL (category 1) to the
desired lower limit.

Optional Accessories

Accessory: Description: To Enable/Disable This Feature:

Outside Temperature
Sensor

Remote Temperature
Sensor

An Outside Temperature Sensor can be tted to the thermostat, allowing the
homeowner to display the outside temperature on the display by pressing
the

button.

A Remote Temperature Sensor can be tted to the thermostat, allowing it
to control the temperature from another room e.g. in commercial premises
where the public may adjust keys.

1. Fit the sensor (instructions are
included in the sensor package).

2. Set 10:SS parameter (category 1)
to 1.

1. Fit the sensor (instructions included
in the sensor package)

2. Set 10:SS parameter (category 1)
to 2.

Specic Application:

HEATING

AIR-CONDITIONING

Gas Boiler (<30kW)

Oil Boiler

Thermal Actuator

Zone Valve

Electric Heating
(resistive load <8A)

Heat Pump / Air­Conditioner

Fan Coil

Setting: What to change:

Cycle/Hour

6

3

12

6

12

3

6

Minimum
ON Time

1

4

1

1

1

4

1

Note: All parameters listed below belong to category 2

- System Parameters (see Installer Parameters Table)

No changes required

Set 1:Ot parameter to 4
Set 2:Cr parameter to 3

Set 2:Cr parameter to 12

No changes required

Set 2:Cr parameter to 12
Set 3:EH parameter to 1

To enable switching between cooling and heating modes
adjust parameter 4:HC in category 2 (0 = disabled, 1 =
enabled). Now you can switch between these modes by
pressing the

any of the product operating modes (AUTO, MAN or OFF).
Explain to the end user how to switch between these modes
using the

is modied as required.

Set 1:Ot parameter to 4
Set 2:Cr parameter to 3

No changes required

and

and

buttons together for 5 seconds in

buttons and ensure the cooling program

Entering the Installer Mode

1 2

Move the slider to
the OFF position.

Press and hold the

button and the two

PROGRAM

buttons together.

3 4

Press the

change factory setting.

The display will ash
indicating that a change
has been made.

5 6

Press

the next parameter.

&

or

button to go to

to

JOUR

COPIE
JOUR

1..6

CM907

JOUR

OFF

PROG
AUTO

MAN

The unit will display
the rst parameter of
installer parameter
group category 1
(from Parameter n.1
to n.19) as shown

Press the green

to conrm the change.

The display will stop
ashing.

Press PROGRAM
group category 2 (

7

To exit the installer mode, move the slider switch to the
AUTO or MAN positions.

button

button to go to Installer parameter

) (from Parameter n.1 to n.5).

2 CM900 - Programmable Room Thermostat Installation Guide 3